C Y L I N D E R S , K E Y S A N D K E Y C O N T R O L
Schlage Cylinder Terminology
Over the last few years Schlage has introduced a varietyof new keyways and cylinder types. This chart illustrates our cylinder terms and how they are related. The definitions below provide additional information.
Cylinder Category | Mechanism | Key Control | |
Full Size Cylinders |
| Adds Patented | |
| Restricted | ||
and Cores | High Security & | ||
Duplication | |||
Geographical | |||
| Exclusivity | Even to | |
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| Conventional | Open and | |
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| Undercut |
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Keyways | Groove |
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| Everest |
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| A | T | E | 7 | Classic |
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| L IC |
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Levels 7 - 9 |
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Small Format
(Best Style)
Interchangeable Core
Conventional
Open and
Restricted
Keyways
| T . | 5,715,717 |
P A |
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Everest Conventional
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Best® Compatible
Everest
Cylinders and keys which incorporate all new keyways with the patented undercut groove on the right side of the key section. C Family is the name of the open family of keyways. B Family (for SFIC) and D Family keyways are restricted.
Keyways
Classic
Opposing Schlage pin tumbler keyways which existed before
Terms Everest keyways. Obverse is the name of the open family of keyways (C, E, etc.) and there are three other families of restricted keyways: Reverse, Numbered and Quad.
Cylinder Mechanisms
Primus Cylinders SchlageÕs high security sidebar cylinder mechanism. Patented key control, geographical exclusivity, and pick resistance are standard. UL437 drill resistance isoptional. Primus keys operate conventional cylinders.
Restricted Keyways
Special
Conventional Cylinders
Opposing Normal, standard cylinders.
Terms
Key Control
Open Keyways
Opposing Standard keyways available without any ordering
Terms formalities. C Family (Everest Conventional) and Obverse (Classic Conventional) keyways are open. All others are restricted.
Cylinder Category
Small Format Interchangeable Core (SFIC)
A core completely interchangeable with Best, Falcon, etc. No Primus version exists. Pins, springs, keys and keyways are based on a plug diameter smaller than the standard 1/2ý.
Opposing
Terms
Full Size
Pertaining to cylinders (including interchangeable cores), keys and keyways based on the industrystandard plug diameter of about 1/2ý.
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